A few months back I did an upgrade to 10.41.09 to my two C5210 wireless controllers. I think it was then that my secondary controller started displaying all foreign AP's as "down". My HA status shows up (on both controllers) and I am getting threat alerts on the secondary. So the connectivity between the two seems good!
I recently upgraded both controllers to 10.41.12 and I was hoping that would fix the issue, but to no avail.
I didn't see anything in the release notes about a bug, or a behavior change. So I am wondering if anyone else has experienced this problem?
Best answer by Ronald Dvorak
I'd assume that you've fastfailover enabled - correct ?!
Which interface is used for availability ?!
Did you check the logs = do you see AP registration attempts on the foreign controller.
You'd need to set logging to infromation > Controller > Logs > Logs Configuration > System Log Level > Wireless Controller Log Level > information